Amber Portwood, who elected to serve five years behind bars instead of completing a drug rehabilitation program after being arrested for drugs and failing multiple drug tests while on probation, looked like she was having a blast before she got busted, getting down to the ground during a wild night out.

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Just another afternoon funneling beers on the beach for Angelina Pivarnik, who was depicted drunk on several episodes of The Jersey Shore. RadarOnline.com exclusively revealed in 2011 that she was even in negotiations to be on Dr. Drew’s Celebrity Rehab.

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Courtney Love, who is famous for her drunken antics, had a major red carpet tumble at the MTV Video Music Awards several years ago. The Hole singer has admitted her struggles with substance abuse over the years, and has even gone to rehab to deal with her issues.

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Drew Barrymore threw out a peace sign after a groovy night on the town.

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Heather Locklear had a little too much fun at a Los Angeles Lakers game, throwing down drinks. The Melrose Place star has publicly faced substance abuse problems over the years, getting arrested for a DUI in 2008 (she later checked into a facility to deal with “anxiety and depression” and was also taken to Los Robles Hospital in 2012, after her sister called 911because she thought she was in danger from taking prescription drugs with alcohol.

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Kiefer Sutherland, who has been arrested twice for drunk driving, was looking far from sober, sitting shirtless in his car at the end of a night out.

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Party girl Paris Hilton, who served time in jail for a 2007 for an alcohol-related reckless driving arrest and was also busted for suspicion of felony cocaine possession in 2010, was having a good time during a wild night out with her pals.

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Rehab veteran Tara Reid, joined by Paris Hilton, looked far from sober during this sweaty night at the clubs.

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Christina Aguilera, who has been snapped several times looking wasted, needed a little help from her beau, while leaving a night club.

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Lindsay Lohan, who has been to rehab six times over the years, passed out in the passenger seat of a car after one of her infamous nights out.

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Mel Gibson, who completed a rehab stint in 2006 after being arrested for a DUI, has a few wild nights under his belt!

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Andy Dick, who has been arrested several times on drug and alcohol charges, could barely walk down the street after this night of crazy partying.

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Nothing says “not sober” more than Snooki in handcuffs! The pint-sixed Jersey Shore star was charged with disorderly conduct in 2012, after a crazy day of drinking on the boardwalk.

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Before he was a dad, Matthew McConaughey liked to get a little bit wild. During his bachelor decades, the hunky actor was known to party like a rock star.

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Rehab veteran Kirsten Dunst had some fun in the club during a night out with her girls.

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Never one to hold back when it comes to partying, Simon Cowell didn’t look very sober in this unflattering photo.

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Paz de la Huerta, whose wild nights have been caught on camera and on video, displays some not-so-sober behavior. The former Boardwalk Empire star was arrested in 2011 for a drunken bar brawl with The City star Samantha Swetra.

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No stranger to the drink, Matt LeBlanc kept his balance with a little help from his Friends.